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Scrub algae and dirt from aquarium rocks with this small footprint, but highly efficient device using the rotary head from a battery-powered toothbrush.

Step 1: Things You Will Need

  • Brush head from a battery-powered toothbrush. I used one for an Oral Action toothbrush. It has a drillable extension on the top that allows for a deeper hole for attachment pin. Other brands may work as well.
  • 3/8 in wood dowel (or larger) -but make sure it will fit in your drill chuck.
  • 1/8 in wood dowel
  • Small saw
  • Drill
  • Pliers
  • Super Glue

Step 2: Separate Rotary Brush From Brush Head

Step 3: Drill 3/16 In. Deep Blind Hole in Top of Brush With a 1/8 In. Drill Bit

Step 4: Drill Hole in End of 3/8 In. Dowel

Use the same 1/8 in drill bit used for the brush hole to drill a 3/8 in. deep hole in the dowel cut to appropriate length for your aquarium. Don't make dowel any longer than necessary.

Step 5: Super Glue Short Piece of 1/8 Dowel Into Brush Hole

Step 6: Super Glue Brush to End OF Dowel With Hole

Step 7: Demo Video of Brush in Action

Use free hand to direct and stabilize bush to minimize vibration.

Running at higher speeds is best.

Video Demo

<p>cool idea.. might recommend getting some clear coat enamel paint and putting a few coats on the rod or else it will absorb the water and rot over time. Or you could go with a pvc pipe and cap (or maybe just a sleeve over your dowel rod glued together so water doesn't get into it). just a couple of suggestions to improve the design. </p>
<p>Just a note to let you know I have added this to the collection: Cordless Drills Hacking for Other Uses !</p><p>&gt;&gt; <a href="https://www.instructables.com/id/Cordless-Drills-Hacking-for-Other-Uses/" rel="nofollow">https://www.instructables.com/id/Cordless-Drills-Hacking-for-Other-Uses/</a></p><p>Take a look at a bunch of project involving odd uses of drills.</p><p>and for even more drill info</p><p>&gt;&gt; <a href="https://www.instructables.com/id/Cordless-Drills-A-Collection-of-Collections/" rel="nofollow">https://www.instructables.com/id/Cordless-Drills-A-Collection-of-Collections/</a></p>
<p>I no longer have a salt water aquarium. But if I did, this would be a godsend. Well done.</p>
<p>I like this concept! I might make one with wider bristles so I can clean the glass of the tank too. Thanks for sharing. </p>

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